SHAREHOLDER ALERT: The Law Offices of Vincent Wong Notifies Investors
of Commencement of a Class Action Lawsuit Involving Chiasma, Inc. and a
Lead Plaintiff Deadline of August 8, 2016

July 15, 2016 10:00 AM Eastern Time

NEW YORK--(EON: Enhanced Online News)--The Law Offices of Vincent Wong announce that a class action lawsuit has
been commenced in the USDC for the District of Massachusetts on behalf
of investors who purchased Chiasma, Inc. (NASDAQ:CHMA) securities
between July 15, 2015 and April 17, 2016.

“conduct a randomized, double-blind and
controlled trial...of sufficiently long duration…”

According to the complaint, among other allegations, defendants made
false and/or misleading statements and/or failed to disclose that (i)
Chiasma’s Phase 3 clinical trial methodology for Mycapssa was not
sufficient to demonstrate efficacy and secure approval by the U.S. Food
and Drug Administration (“FDA”); (ii) Chiasma’s supervision of its
suppliers was not sufficient to prevent deficiencies that would delay
FDA approval of Mycapssa; and (iii) as a result of the foregoing,
Chiasma’s public statements were materially false and misleading at all
relevant times.

On April 15, 2016, the Company announced the receipt of a Complete
Response Letter from the FDA, indicating that Chiasma’s New Drug
Application for Mycapssa was not ready for approval. Then on April 18,
2016, the Company issued a release clarifying the FDA’s concerns, noting
that the FDA recommended Chiasma “conduct a randomized, double-blind and
controlled trial...of sufficiently long duration…”

If you suffered a loss in Chiasma you have until August
8, 2016to request that the Court appoint you as lead
plaintiff. Your ability to share in any recovery doesn’t require that
you serve as a lead plaintiff. To obtain additional information, contact
Vincent Wong, Esq. either via email vw@wongesq.com,
by telephone at 212.425.1140, or visit http://www.wongesq.com/pslra/chiasma.

Vincent Wong, Esq. is an experienced attorney that has represented
investors in securities litigations involving financial fraud and
violations of shareholder rights. Attorney advertising. Prior results do
not guarantee similar outcomes.

Contacts

The Law Offices of Vincent WongVincent Wong, Esq., 212-425-1140Fax.
866-699-3880vw@wongesq.com